Show:
Net Forces
Inertia
Newton's Laws
Energy
Law of Conservation
100
The combination of all forces acting on an object.
What is a net force?
100
The idea that an object in motion will stay in motion or an object at rest will stay at rest.
What is inertia?
100
This is the law that states F = ma
What is Newton's 2nd Law of Motion?
100
This is the energy of an object based on its position.
What is potential energy?
100
This is the law that states that energy cannot be created or destroyed. Energy is transferred (or changed) from one form to another.
What is the law of conservation of energy?
200
You push on a box with 10 N to the right and your little brother pushes on the same box, at the same time, with 8 N to the left. This is the net force on the box.
What is 2 N to the right.
200
A ball rolling in the grass should, theoretically, keep rolling unless an outside force acts upon it. This is the reason the rolling ball will stop even if no one is around to kick it.
What is friction?
200
This is Newton's Law that is also known as the Law of Inertia.
What is Newton's 1st Law of Motion?
200
This is the energy of an object based on its motion.
What is kinetic energy?
200
An ideal roller coaster has a kinetic energy of 10 Joules and a potential energy of 5 joules. This is the mechanical energy of the roller coaster.
What is 15 Joules?
300
Your quad is stuck in the mud and you push to the right with a 15 N force but it will not move. Your friend comes to help you and pushes with an additional 15 N force. This is the net force on the quad.
What is 30 N to the right.
300
This is an explanation of why you could fly over your bike handle bars if you stop short.
What is: Your body is in motion (moving forward) and will want to continue moving forward unless an outside force acts upon it. An outside force (friction) acted on the bike brakes but nothing acted upon you (the person).
300
This is the law that states that every action has an equal but opposite reaction.
What is Newton's 3rd Law?
300
A skateboarder rides back and forth on a half-pipe. This is the spot on the half-pipe that the skateboarder has the most potential energy.
What is the top of the half-pipe? (the top of the jump)
300
These are the units used to express energy.
What are Joules?
400
Jack and Jill are fighting over who gets to carry the pail of water. Jack pulls to the left with an 8 N force and Jill pulls to the right with a 9 N force. This is who ends up with the bucket of water and the net force on the bucket.
Who is Jill with 1 N to the right?
400
This is an explanation of how magicians can pull the table cloth out from under glasses without them falling over.
What is inertia? The objects on the table will want to stay at rest.
400
This is the force of a 5 kg box that accelerates at a rate of 2 m/s/s.
What is 10 N?
400
You are on the pirate ship ride. Explain the energy transfer from the top of the swing to the bottom of the swing (assuming the bottom of the swing is completely level with the ground).
What is 100% potential energy transferred into 100% kinetic energy.
400
You go bowling and roll the bowling ball down the lane. When you release the ball, it has a mechanical energy of 20 Joules. After a couple of seconds, right before the ball hit the pins, the mechanical energy decreased to 5 Joules. This is what is in common with the amount of energy lost by the ball and the amount of energy transferred into heat energy due to friction.
What is: they are the same (they are equal!) Energy from the ball is equal to the amount of energy transferred into heat due to friction.
500
Kyleigh and Paige are fighting over a $100 dollar bill. Kyleigh pulls to the left with 13 N and Paige pulls to the right with 18 N. This is who will end up with the money. Then, Brooke comes in to help Kyleigh and also pulls to the left with 5 N. This is who will end up with the money and the net force acting on the $100 dollar bill.
Who is Paige? Who is nobody because the net force is 0?
500
This is an explanation of how/why people may get whip lash during a "fender bender"
What is inertia? The people in the car will want to remain at rest with their heads up against the seat back. The car is then pushed forward (from the back) forcing the person's head to push forward and whip back.
500
This is the mass of an object that accelerates at a rate of 2 m/s/s when a 100 N force is applied to it.
What is 50 kg?
500
A roller coaster has a couple drops and bumps. This roller coaster starts at 100 feet above ground (point A) and drops to 50 ft above the ground (point B). After point B, it rides back up to point C which is 75 feet above the ground. Lastly, after point C, the roller coaster drops back to ground level (point D). This is the energy transfer throughout the entire ride.
What is: Point A to Point B: 100% PE to 50% KE, 50% PE Point B to Point C: 50% KE, 50% PE to 25% KE to 75% PE Point C to Point D: 25% KE, 75% PE to 100% KE
500
You are playing bocce ball. After rolling the ball, it at 15 Joules of mechanical energy. Seconds later, after the ball rolled, it has a mechanical energy of 6 Joules. This is the amount of energy that was lost by the ball AND the amount of energy that was transferred into head energy (because of friction).
What are 9 Joules?